Timer brush



' March 23 192s. 1,577,512

I M. FORDER TIMER BRUSH Filed April 25. 1924 FNVENTOR ,oz defi WITNE SE a 1 Tc fi mt fidd i c tti i l -1 iBii nown; that MILTON [citizen of 'the UnitedQSta'ftes-f iadait o; j.se u ed "timer s aft, in jilace f 'otj the l brush a consistspesfsentially;of a hub 2:0 I I l i c wlnchwmay Q .ty e;-1 Thus; springs w ithfdifi'erent types of f 1 gfcontactsinay Lbe used interchangeably in the a m 'h l m-szi I p 1':

A{ ;-fu1l;.'an coniplete I understanding I of ;*the inventionfniay be? obtained from a con I ,asideration'ot'the fOHoW g'Id id'escrip;

' ftion taken'ainjconnection with the" acicom panying I drawing flforming a part -"of this 'speeificatioinigiit beingunderstood that while i vention, the latter isnot toibe-confined to .striet conformity Witli athe showing thereof,

i 7 "such changes andinodifieations mark no material departure from thesalient features of the 'inventionsiasspecifically pointed out in theappendedclaims, V T4 0 'InthedraWing:

- i 1 Fig'urel l' is- =p1an yiew" 5f the timezone iftherewith, "with the u and t mQT' shafi' I a Figure a'sectional View takenonthe 5Q,- fline'4-j 4o-f-fFigureZ.

" L .ent; type 1 of brush with a spring'which may j beaused intereliange lyfWiththatsho nin" Thief River Falls, injlthef county; of iPen- I l dsl i fp Q T i L QQ have: int? "'newfaiidffuseful Tiin'erBrush; of; M H I l es vel jwi h 'bl k ll th m's t f sedFo-n timers for;

ieictl he i lw nt ii s w J 's iil i'a i in xpen i v; co monly used without i any i alter ation and.efiFiciently;withflittle traction.

v remb-v held therein and.

eb s f mentat O ter t bejeither of the wiper or. roller lo'utjinay he 'changed and "inodified so long as -Fi 5 Li persp tivejiriiew of a difier am-tie as the nectedtdthe;resriectivefbinding;posts 12. Th'e'timer c'an'i Shaft 13; is "toilet-ably" in'ountf I ted-centrally of the casing lo; ,andearries a 6 rotor} hayingia brush; which contacts? suerotates. v In carrying out inyenti k ma a-hub l gwhieh a iremovably 5 *s'eouredgtoj the: outer 'o fiithe shaft; 13, in-placeiof-the usual rotor andfhy 'thesame ineaiis; j The usual manner-of f securing this {rotor 'or ;hub, COIISlSts lnfproy dlng {a notch ejr-slet 15in the hub 14, andinserting-there? 79' "ina pin' 16} which enters a hole'in the'shaft, and iszheld therein'fbyaflring l'Tfwhieh is inserted-over: the, outer of the ubs-fad has at its outer side an intufned' flange i which 'isfsecurd 'in fixe'd rlati onto "the-1111b t h ya nut'l fwhich isithr eadedjonto theioute endfo fftheshaft; The'hub '14: ,is provided beyondtheedgey of? theringj17 with a laterally projecting; wing 20, having. therein a radial slot 21, 8

which isenlarged: at itsinnei'i end tofform a substantially circular recess 22; Cooper'- 7 'ating with 'thehub Elisa-fiat spring 23,

substantially, semi-circular, and having at I one endaninturned; ortion-24f terminating $5 in an eye 25, adapte tofit withinith e slot 21 and recess .22, respectively. "The" inner iendiof the recess '22 maybe-partially closed;- 1

or reduced insize, as indicated at 26,-in 01a; der'to prevent the spring 23 from hearing I90vv .against' the bottom of thetimercasing, and -i t will vhe noted that the eye 25 extends part-J 1 1y underneath the ring 17, and is held in 1 place thereby.

Theouter end of theshr-ing23is formed 5 with a brush; which, asshown in Figures '1'and'2, is in the form of an v eye, and the spring istensioned so thatthe eye 27 forms a wiping contact with thecontactblocks w 11 as the shaft 13 rotates; ,The' hollow na V i. iture of the vbrush member 27 aids inkeep-i ting it cool', and it vis' also to be noted that the spring 23 extends substantially half the distance around the' periphery" of the timer cone,'and 'thusresultsin a smoother action 1 5 and greater flexibility, with a decrease in friction. c i

InFigur'e 5 I have s how na spring 23 which isinterchangeable with the-spring 23, d

and which "is-formed, with a bifurcated outer mimomr itmitf r' ,Tn nrhnivnit FALLS, JM-rmtESOTA, issmnor b wi m 1:.

y DER;:Ann ynworr- ;ro ann nori-rjor BfQ'EL MINNESOTAQ- afll e P 0? Q i 

